Dad's doctors wont refer hospice.

My dad has lost about 35 lbs and tests show blood and everything are fine. He can barely walk, sleeps most of the time and stimulants or whatever they gave him never gave him back his appetite. In Dec 2015, he had gotten fitted for upper dentures and some teeth taken out. Once he received the dentures, they were bucked, painful and he couldn't eat so he started Ensures. He started rapidly losing weight. His girlfriend finally convinced him to get refitted but it had been months. They found pieces of teeth still left in his gums which caused the pain but the new dentures fit great. He could chew food but chose soft ones still and couldn't eat but a few bites. He literally drinks only a half an ensure, half his coffee (he has to have, he says), has no energy and his has trouble breathing trying to walk. He won't quit smoking either. He says he knows he has to force himself to eat but he said with no appetite that it's so hard. It's hurting all of us to watch him wither away when before these dentures, he was outside working on his yard, traveling, going to church, choir practice and bowling in a league once a week. My youngest brother lives with him but has to work to pay for food for dad and himself. It's an hour or so from my house and I have Dr appointments, husband's physical therapy twice a week and husband's business so it's hard to get out there. Dad's girlfriend lives 15 minutes away but also cares for an elderly 85 yr old lady from their church. The Dr's won't refer Hospice. They said he has to have a terminal illness for 6 months or 6 months to live before he can be referred. Dad has Medicare, so is there a way we can get help for him with a nurse coming by to check on him, make sure he's taking his meds, bathe him and chang his sheets? It's been so hard on my brother and he worries he may fall again. His last fall bruised one side of his head. Ive never been close to my dad. He is close to my three brothers but seeing him suffering like this is killing me. I've had to put off my cardiologist appointments because I was crying so much for a couple weeks worrying about my dad. Thank you for any advice you can give.